From: Naveen Krishna <ch.naveen@xxxxxxxxxxx>
This patch adds a feature bit field in the touchscreen driver for Samsung SoCs.
Which can be used to distinguish the TSADC module features.
Signed-off-by: Naveen Krishna Ch <ch.naveen@xxxxxxxxxxx>
Signed-off-by: Kukjin Kim <kgene.kim@xxxxxxxxxxx>
[ben-linux@xxxxxxxxx: minor fix to title]
Signed-off-by: Ben Dooks <ben-linux@xxxxxxxxx>
---
drivers/input/touchscreen/s3c2410_ts.c | 15 ++++++++++++---
1 files changed, 12 insertions(+), 3 deletions(-)
diff --git a/drivers/input/touchscreen/s3c2410_ts.c b/drivers/input/touchscreen/s3c2410_ts.c
index 86086a4..e0b7c83 100644
--- a/drivers/input/touchscreen/s3c2410_ts.c
+++ b/drivers/input/touchscreen/s3c2410_ts.c
@@ -55,6 +55,8 @@
S3C2410_ADCTSC_AUTO_PST | \
S3C2410_ADCTSC_XY_PST(0))
+#define FEAT_PEN_IRQ (1 << 0) /* HAS ADCCLRINTPNDNUP */
+
/* Per-touchscreen data. */
/**
@@ -69,6 +71,7 @@
* @irq_tc: The interrupt number for pen up/down interrupt
* @count: The number of samples collected.
* @shift: The log2 of the maximum count to read in one go.
+ * @features: The features supported by the TSADC MOdule.
*/
struct s3c2410ts {
struct s3c_adc_client *client;
@@ -81,6 +84,7 @@ struct s3c2410ts {
int irq_tc;
int count;
int shift;
+ int features;
};
static struct s3c2410ts ts;
@@ -171,6 +175,11 @@ static irqreturn_t stylus_irq(int irq, void *dev_id)
else
dev_info(ts.dev, "%s: count=%d\n", __func__, ts.count);
+ if (ts.features & FEAT_PEN_IRQ) {
+ /* Clear pen down/up interrupt */
+ writel(0x0, ts.io + S3C64XX_ADCCLRINTPNDNUP);
+ }
+
return IRQ_HANDLED;
}
@@ -317,6 +326,7 @@ static int __devinit s3c2410ts_probe(struct platform_device *pdev)
ts.input->id.version = 0x0102;
ts.shift = info->oversampling_shift;
+ ts.features = platform_get_device_id(pdev)->driver_data;
ret = request_irq(ts.irq_tc, stylus_irq, IRQF_DISABLED,
"s3c2410_ts_pen", ts.input);
@@ -403,15 +413,14 @@ static struct dev_pm_ops s3c_ts_pmops = {
#endif
static struct platform_device_id s3cts_driver_ids[] = {
- { "s3c2410-ts", 0 },
- { "s3c2440-ts", 1 },
+ { "s3c64xx-ts", FEAT_PEN_IRQ },
{ }
};
MODULE_DEVICE_TABLE(platform, s3cts_driver_ids);
static struct platform_driver s3c_ts_driver = {
.driver = {
- .name = "s3c24xx-ts",
+ .name = "samsung-ts",
.owner = THIS_MODULE,
#ifdef CONFIG_PM
.pm = &s3c_ts_pmops,
--
1.6.3.3
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